Re: "fall through" spam filtering with Sieve?

[Simon Josefsson <jas@extundo.com>]

Steinar Bang <sb@dod.no> writes:

> I'm in the process of getting my cyrus imapd on my debian testing
> machine, from the official 1.5.9, to the highly unofficial 2.1.1.
>
> One thing I have done both with Gnus nnml filtering, and later with
> procmail filtering into IMAP folders, is to let everything not
> addressed to or from a mailing list I subscribe to, or one of my email
> addresses, "drop through" into a SPAM folder.
>
> Is there a way to do this with Sieve rules created interactively from
> Gnus? 

Yes.  Add Sieve rules for all your groups (manually using G p from
group buffer, or M-x gnus-sieve-article-add-rule RET for some
heuristics that work for mailing lists in the summary/article buffer),
create the .sieve file using D g from the group buffer and upload it
to your server using C-c RET and C-c l in the .sieve buffer.

There are some example Sieve rules in the Sieve manual as well.